1.7 Versioning and Capability Negotiation
The Group Policy: Folder Redirection Protocol Extension does not provide for capability negotiations.
The Group Policy: Folder Redirection Protocol Extension does provide versioning capability through its configuration data that is stored in the remote storage location. The Folder Redirection Administrative-Side Plug-in generates additional, secondary configuration data for an operating system version if the folder redirection policies specified by an administrator affect user profile folders (which are features provided only by that version of an operating system).<3>
Folder Redirection Client-Side Plug-ins that support the later Version One format are required to read and use only the Version One configuration data from the remote storage location, when it is available. If the remote storage location provides only Version Zero configuration data, client-side plug-ins that support the later Version One format read and use the Version Zero configuration data.
The Version One format specifies a VersionNumber field designed to allow future versions of the protocol, but only a single value of that field is presently defined, and thus Version One of the protocol is required to set that field to a constant value.